fix #10811: add templatePrefix to Fileset

See from https://trac.openmicroscopy.org.uk/ome/ticket/10811#comment:7
for instructions on upgrading older FS DBs to accommodate this change.
new database schema
Fix browsing of orphaned container. (see #11089)
Clean up code and remove whitespace.
Fix indent
Merge pull request #1168 from mtbc/trac-10811

fix #10811: add templatePrefix to Fileset
Merge pull request #1265 from jburel/orphan-folder

Orphan folder